January 17, 2019

Looking at the pH meters available on the market, it seems to us that recently, there has been an influx of cheap imports. As to whether they work well, reliably, and accurately, that is for the customers to decide.

What we also noticed is that most of these new pH meters are portable and meant to be used as needed. But we all know that can be troublesome because the actual pH level in a nutrient system varies. What this means is that even if you were to have the right pH balance, it changes after some time.

So, think about your indoor garden set up. To promote the faster growth of plants, you would be using an indoor growing tent and the right grow lights. But rather than planting the traditional way of using soil, you decided to use hydroponics. The truth is that when it comes to optimizing the growth of plants, this is about the best set up you could do.

But equally important is using an instrument to take measurements not only pH level, but also the conductivity and temperature. As mentioned, these parameters or conditions changes minute by minute or hour by hour, as well as how large your plant has grown.

So, the solution to the never-ending task of monitoring is to take away the number of times you have to do the same things, again and again. Here is where the Guardian Monitor, manufactured by Bluelab Corporation, comes in.

Rather than doing the measurements manually, the Guardian Monitor does this for you automatically. All you have to do is to attach it to your reservoir.

Now, you have more time to do other productive things.

Bluelab Corporation

Bluelab Guardian Meter
Bluelab Guardian Meter

Bluelab is no stranger to the market. In fact, it has been designing and manufacturing some of the most accurate and reliable instruments worldwide for more than three decades.

Even if the company is headquartered in New Zealand, they could ship their products worldwide. While you could buy direct from the company, an alternative would be to purchase from Amazon. As you very well know, Amazon often has better pricing.

When it comes to testers and meters, Bluelab gives you no frill no nonsense products that work.

So, is the Bluelab Guardian Meter do for you?

Key Features

The Bluelab Guardian Meter takes an accurate measurement of pH level, as well as a couple of others that are important to your plant’s healthy growth. And this is coming from a company that has made its mark and establish a good reputation in different industries, including hydroponics.

Bluelab Combo Meter measures pH, nutrient, and temperature. The intention is to make sure that you are providing your plants with the optimal condition for it to grow really well. For that reason, accuracy is the most important thing that a testing meter should do.

The Guardian Monitor has a pH measurement range of 0 – 14.0 pH with a resolution of 0.1 pH. It also has an accuracy of ± 0.1pH at 25 °C.

As for the conductivity, which is good for measuring nutrients, it has a range of 0 – 5.0 EC, 0 – 50 CF, 0 – 2500 TDS (ECx500), 0 – 3500 ppm (ECx700) with a resolution of 0.1 EC, 1 CF, 10 TDS, 10 ppm. At an average room temperature of 25 °C, it has an accuracy of ±0.1 EC, 1 CF, 10 TDS, 10 ppm.

And for the temperature, it has a range of 0 – 50 °C, 32 – 122 °F with a resolution of 1 °C, 1 °F and an accuracy of ±1 °C, ±2 °F at 25 °C.

While you do not need to calibrate both conductivity and temperature, you will have to calibrate the pH meter, which is quite easy to do.

Bluelab Guardian Monitor is different from other pH testers in the market in the sense that this is a fulltime monitor that you attach to the reservoir of your hydroponics system. Simply place the monitor on a wall or hang on the support bar of your indoor grow tent, and then connect the probes to your nutrient system.

The unit comes with a 2-year warranty, but for the probes, it is only 6 months. But that is also because the pH probe needs to be replaced by then.

Bluelab Guardian Meter

Bluelab Guardian Meter
Bluelab Guardian Meter

Of concern is what other customers think of the Bluelab Guardian Monitor. On paper, it looks great. But when you imagine the convenience of seeing three measurements at a glance, then it makes this unit so much more enticing and seems like the one that you need.

But we also value the experience of customers in the past who have used the Guardian Monitor. We are aware that there are times when a problem is caused by using the product the wrong way, but sometimes, a pattern could also be seen.

The good news is that a couple of issues reported is solved by the company in no time at all, which means they have excellent customer support.

What you want to be wary of is the lifetime of the probes. For the pH probe, it is built to last for only 6 months. All pH probes are like that. But what might tick off some people is that it breaks more easily than others.

So, this is more a question of caring for your equipment such as proper handling, as well as the choice of accurate information or a design that is built to last longer than 6 months, although it still would not function more than that.

Admittedly, Bluelab’s pH probe is a little less durable, but that is because it was designed to be more sensitive, hence a more reliable reading.

One other issue that may crop up is a defect in the product. To this, Bluelab has done a splendid job to sending replacements in the fastest manner possible.

Buy or Pass Up on the Bluelab Guardian Meter

Buy Bluelab Guardian Meter
Buy Bluelab Guardian Meter

The Bluelab Guardian Meter is the top-of-the-line monitor that helps you grow your plants indoor with a hydroponic system. When you consider the convenience, it gives, the reliability and the reputation of the company, and so as long as you could afford its price tag, there is no reason why this should not be your best choice.

We think a perfect system would have the Bluelab Guardian Meter as part of the set up. Buy your Bluelab Guardian Meter here!

There are many products related to growing marijuana; so many that we needed a dedicated person to review them all. Anthony is that person. If there’s a product that will help you grow marijuana, he’s likely tried it or at least heard of it. More... [read more]


Please Post Your Comments & Reviews

Your email address will not be published. Required fields are marked *

World Icon

200 grow guides

500 Helpful Articles

Group Icon

35,000+ Daily Visitors

500,000+ Grow Bible readers

Plant Icon

1500 Strain Reviews

100 Strains For Sale